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| <?php | |
| namespace MediaWiki\Extension\Genealogy; | |
| use Sanitizer; | |
| class GraphVizTreeFormatter extends TreeFormatter { | |
| /** | |
| * @inheritDoc | |
| */ | |
| public function getOutput() { | |
| // Start the tree. | |
| $this->out( 'top', 'start', "digraph GenealogyTree_$this->name {" ); | |
| $this->out( 'top', 'graph-attrs', 'graph [rankdir=LR, ranksep=0.55]' ); | |
| $this->out( 'top', 'edge-attrs', 'edge [arrowhead=none, headport=w]' ); | |
| $this->out( 'top', 'node-attrs', 'node [shape=plaintext, fontsize=12]' ); | |
| // Combine all parts of the graph output. | |
| $out = implode( "\n", $this->out['top'] ) . "\n\n" | |
| . "/* People */\n" | |
| . implode( "\n", $this->out['person'] ) . "\n\n"; | |
| if ( isset( $this->out['partner'] ) ) { | |
| $out .= "/* Partners */\n" | |
| . implode( "\n", $this->out['partner'] ) . "\n\n"; | |
| } | |
| if ( isset( $this->out['child'] ) ) { | |
| $out .= "/* Children */\n" | |
| . implode( "\n", $this->out['child'] ) . "\n\n"; | |
| } | |
| return $out . "}\n"; | |
| } | |
| /** | |
| * Output one GraphViz line for the given person. | |
| * @param Person $person The person. | |
| */ | |
| protected function outputPerson( Person $person ) { | |
| if ( $person->getTitle()->exists() ) { | |
| $url = '[[' . $person->getTitle()->getPrefixedText() . ']]'; | |
| $colour = 'black'; | |
| } else { | |
| $queryString = [ | |
| 'preload' => wfMessage( 'genealogy-person-preload' ), | |
| 'action' => 'edit', | |
| ]; | |
| $url = '[' . $person->getTitle()->getFullURL( $queryString ) . ']'; | |
| $colour = 'red'; | |
| } | |
| $personId = $this->varId( $person->getTitle()->getPrefixedText() ); | |
| $desc = ''; | |
| if ( $person->getDescription() ) { | |
| $desc = '<BR/><FONT POINT-SIZE="9">' | |
| . Sanitizer::stripAllTags( $person->getDescription() ) | |
| . '</FONT>'; | |
| } | |
| $title = $person->getTitle()->getText(); | |
| $line = $personId . " [" | |
| . " label=<$title$desc>, " | |
| . " URL=" . $this->quoteValue( $url ) . ", " | |
| . " tooltip=" . $this->quoteValue( $person->getTitle()->getPrefixedText() ) . ", " | |
| . " fontcolor=\"$colour\" " | |
| . "]"; | |
| $this->out( 'person', $personId, $line ); | |
| } | |
| /** | |
| * Quote and escape a string. | |
| * The GraphViz docs say: In quoted strings in DOT, the only escaped character is double-quote ("). | |
| * That is, in quoted strings, the dyad \" is converted to "; all other characters are left unchanged. | |
| * In particular, \\ remains \\. Layout engines may apply additional escape sequences. | |
| * @param string $val | |
| * @return string The escaped value, with surrounding quotes. | |
| */ | |
| private function quoteValue( string $val ): string { | |
| return '"' . str_replace( '"', '\"', $val ) . '"'; | |
| } | |
| /** | |
| * @inheritDoc | |
| */ | |
| protected function outputJunction( $peopleId ) { | |
| $this->out( 'partner', $peopleId, $this->varId( $peopleId ) . ' [label="", shape="point"]' ); | |
| } | |
| /** | |
| * @inheritDoc | |
| */ | |
| protected function outputEdge( $group, $key, $from, $to, $towardsJunction = false ) { | |
| $line = $this->varId( $from ) . ' -> ' . $this->varId( $to ); | |
| if ( $towardsJunction ) { | |
| $line .= " [style=\"dashed\"]"; | |
| } | |
| $this->out( $group, $key, $line ); | |
| } | |
| } |